GB2436913A

GB2436913A - Inflatable protective clothing

Info

Publication number: GB2436913A
Application number: GB0603323A
Authority: GB
Inventors: Edward David Furs
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-16
Filing date: 2006-02-20
Publication date: 2007-10-10
Anticipated expiration: 2026-02-20
Also published as: GB0603323D0; FR2894833A1; GB2436913B; FR2894833B1

Abstract

Enclosed protective clothing with provision for filtering air. The filtering provision being chemical filters at an air inlet and an air outlet. Circulation of air through the filters and clothing may be provided by convection effects body heat. The clothing consists at least partly of either transparent plastic sheet or rubberised sheet that is arranged in two layers. The arrangement of the sheeting is such that inflation by air between the sheets provides some rigidity to the walls of the clothing. Inflation may be performed by blowing into a tube or a small bellows device. The clothing may be in the form of a hood 27, a hood and tunic or a hood and tunic and trousers 27, 14. The hood may be provided with a bib pocket 33 for positioning on the chest that forms part of the internal volume of the hood 27. The protective clothing may also be provided with a refrigeration arrangement, cooling is provided by a source of liquid air.

Description

2436913

A

1.

Improvements to Antiviral Clothing and Respiration Means

The main purpose of this patent application is to provide very inexpensive means of protection specifically from the avian flu virus.

This patent application relates to U.K. patent application G.B. 2 409 167 A that was filed on 19.12.2003.

The protection means of this application are based on virus aetiology considered by common cold research at Salisbury, U.K. Virus infections such as those of the common cold and ordinary influenza are mainly transmitted from person to person by near contact, by airborne saliva infection, that is mainly caused by direct exhalation and inhalation. It seems that ocular infection is possible, and dermal infection, through very small cuts. The virulence of these viruses probably diminishes if the virus does not find a host shortly after dissemination. A virus that has adhered to clothing or surfaces or objects for some time is probably not likely to cause infection. In recent bird handling incidents the H5N1 virus was probably inhaled in circumstances of very close proximity.

In view of some of these considerations the fabrication of many millions of cloth face masks have been ordered by some countries, as a means of protection should the avian flu virus mutate and cause a pandemic.

The purpose of this application is to provide a safer means of inexpensive protection, using a protective envelope of transparent plastic sheet or similar material such as rubberized sheet, in the forms of an enclosed light plastic hood, or an enclosed hood and tunic, or an enclosed suit consisting of a hood, tunic and trousers, that include life support means. Workers in paddy fields wearing the hood or the hood and the tunic, should also protect the feet and hands, by keeping them dry, since it is said that open water can harbour the virus.

2.

The aims of this invention, that provides antiviral enclosed clothing, with improved respiration means, are to provide protection from direct virus contamination throughout a working day, together with wearing comfort.

The herein described antiviral enclosed clothing with improved respiration means, is for a limited specific function, relative to the previous similar invention, the improved respiration means including a clean air refrigeration unit, that represents an improvement over a previously described invention, that of U.K. Patent Application GB 2 409 167 A, the improvement of simplification, by not being provided with a complicated means of virus elimination by temperature variation, thus achieving an aim of simplicity, as respiration means, the limited specific function being a protection from the H5N1 virus only, by filter elimination only, during daily outdoor periods of use within working, travelling and shopping hours, the improved respiration means being simplicity of construction and economy of construction and simplicity of function and economy of energy, and simplicity of energy control, being without complicated energy control by valves, and being without the provision of a number of cooling tubes and re-warming tubes, and being without the provision of a warming compartment, in relation to the previous similar invention that has been described and published, the improved clean air refrigeration unit being specifically for protection from the H5N1 avian flu virus by the provision of a circulation of fresh air and by the disposal of used moist air, and by the provision of a circulation of cooled air, and by the use of permeated air filters, to the exclusion of any more sophisticated and complicated performance, such as air cooling to very low temperatures to inactivate viruses, and subsequent re-warming of air to permit breathing at a safe temperature, and such as body refrigeration in high ambient temperatures, previously described in the similar invention, the improved clean air refrigeration unit consisting of two main parts, an improved tube box, being an improvement by simplicity, that specifically provides protection from the H5N1 virus only, without any more sophisticated performance as in the previous publication, and an improved liquid air flask, being improved by simplicity of function, that includes two levels of energy control by simple fixation position, that specifically provides protection from the H5N1 virus only, the improved clean air refrigeration unit therefore presenting an improvement by

3.

requiring much less functional energy, thus tending to permit an autonomy of carried liquid air or a much less liquid air requirement during a required daily period of use, being the length and extent of a working day, including travelling time, than the previous similar invention.

The persons who must seek virus protection are those who cannot remain in isolation within the safety and protection of their homes, but who must leave home to go shopping, or to travel to work in public transport, and who have to spend the day with many people in a place of work. When the person returns home, it will only be necessary to wipe the outside surfaces of this antiviral clothing with a cloth or a sponge soaked in disinfectant, before taking off this clothing, and entering the home. As a precaution, this antiviral clothing may be stowed in a bag that is closed with a zip fastener.

The wearing of enclosed antiviral clothing requires several support means. One support means is a clean air breathing system. Another support means is an airflow, to carry away used air and moisture. A circulation system is necessary, whereby clean fresh air is made available with the air flow and whereby used air is expelled from the envelope. A cooling system is also a requirement, that can be the airflow, or the hereunder described clean air refrigeration unit. During a working day, it will be necessary to take refreshments while remaining fully protected from freshly exhaled viruses, and this implies that only foods and liquids that have been packed within the enclosed protective envelope in clean air surroundings such as the home, can be safely consumed, within the envelope.

These air support systems are made available within the enclosed envelope by either one of two arrangements, or both, that together with the hereunder described arrangements of antiviral clothing, constitute the invention, that is, a new means of protection from avian flu. One arrangement is the provision within the envelope of at least two air filters, drawing indications 22 and 25, Figure 4, that by their relative high and low positions will produce a flow of air that is induced by warmth variations due to body heat, and that by their large area will permit air to permeate through the filters in excess of the quantities that are required for breathing, whereby one of these filters, the lower, will tend to admit air while the other becomes an air outlet, thus

4.

providing a circulation of breathable fresh air within the enclosed antiviral clothing, and a cooling system. After some wear these chemical filters may have to be exchanged for new ones, and the filter exchange facility must therefore consist of a filter frame that is moulded into the plastic material of the antiviral clothing, onto which or within which a matching frame of the chemical permeated air filters may be easily clipped or inserted.

The other arrangement for the provision of the air support systems is supplies of liquid air, and a small portable refrigeration system or a clean air refrigeration unit, that is required to lower the temperature of ambient air by only a few degrees centigrade, perhaps about three of four, instead of a requirement of the previous invention of very deep cooling , such as about minus sixty degrees centigrade, the unit being designed to operate from a small supply of liquid air that is carried within a small safety flask, the liquid air also being made available within large refilling containers that can be installed in public places, such as shopping centres and in places of work, for the easy personal refilling of the small liquid air flasks.

The clean air refrigeration unit, indication 1, Figures 1,2,3 and 4, and indication 15, Figures 1 and 3, operates by cooling an air circulation cooling tube or compartment 4, Figure 1, provided with vertical cooling fins, and by cooling a used air expulsion tube or compartment 5, Figure 1, provided with vertical cooling fins, by a limited transfer of heat from the liquid air flask 15, Figure 1, to these cooling tubes. Heat may be exchanged with the air in the tubes or compartments by means of fine vertical fins. As air within the air expulsion tube 5, Figure 1, cools, it gains in relative weight and sinks from the tube and from the enclosed envelope, to the surrounding atmosphere at filter 22, Figure 1, through an exit safety filter, whereby a slight relative difference of air pressures that tends to occur within the enclosed volume of the envelope causes ambient air to enter the enclosed envelope, through the provided air inlets and through the air inlet air cleaning filters 24, Figures 2 and 4, and 25, Figures 3 and 4, thus creating a circulation of fresh clean air, while the air circulation cooling tube 4, Figure 1, cools the circulating air to wholly or partly remove body heat. The clean

5.

air refrigeration unit and the protective envelope 14, Figures 1 and 4, therefore perform their functions of protection without the use of an electrical or mechanical pumping device.

In one hood presentation of this invention, Figures 2 and 3, the hood is indicated by drawing indication 27, and the clean air refrigeration unit mainly consists of a cooling tube box indicated in drawing indication 1, Figures 2 and 3, and a liquid air flask, drawing indication 15, Figure 3, that are positioned on a bib pocket 33, Figure 3.

The cooling tube box 1, Figure 3, that is positioned within the bib pocket 33, figure 3, and therefore within the hood envelope 27, figures 2 and 3, is clipped or fastened, perhaps by wing nuts, to the inside face of an attachment plate 35, Figure 1, that is moulded into the plastic material that is on the front side of bib pocket 33, Figures 2 and 3, while the liquid air flask 15, figure 3, is clipped or fastened , perhaps by wing nuts, in a position that is opposite to the cooling tube box, on the outside face of the attachment plate 35, Figure 1. The attachment plate 35, Figure 1, is provided on each of its two surfaces with a number of protruding heat liaison or heat conduction studs, which each become inserted at each of their ends both into the cooling box and into the liquid air flask, to thereby permit the transmission of a suitable amount of heat from the liquid air to the cooling tubes or cooling compartments that are in the cooling tube box. Since the liquid air flask is situated on the outside of the hood and bib pocket protective envelope , it is possible to exchange or refill the liquid air flask 15 figure 3, without opening or removing the protective clothing .

The hood and tunic presentation of this invention is shown in Figure 4, together with a zip fastener 29 figure 4 for attaching trousers , to form a suit. The tunic is provided with large sleeves that terminate in gloves that are sealed to the sleeves, to prevent the entry of air into the sleeves, to permit exterior manipulations. An interior pocket 28, Figure 4, is mainly for the provision of foods and liquids for consumption within the envelope during the course of a working day. The pocket may be placed centrally on the front of the tunic to permit weight

6.

support from both shoulders and from a waist belt. Vertical zip fastener 30, Figure 4, for opening the tunic, is probably superfluous, in view of the spaciousness of the inflated clothing.

The hood and tunic presentation of this invention does not require a bib pocket. The attachment plate 35, Figure 1, to which are attached tube box 1, Figure 3, and the liquid air flask 15, figure 3, is moulded into the plastic or rubber materiel on the front of the tunic, drawing indication 1, Figures 2 and 3.

The clean air refrigeration unit may take the form of a box of any suitable dimensions, such as sides twenty centimetres by twenty centimetres and of a thickness that is in accordance with the amount of liquid air that will be carried.

A carried amount of liquid air of one litre will require a liquid air flask volume of 20 x 20 x 2.5 centimetres, and therefore a thickness of about 3 centimetres. Considerations to be taken into account are the consumption rate of the liquid air, the number of hours of autonomy that are required, and the weight of the quantity of liquid air that is carried. A full working day including travelling time might last for ten to twelve hours.

According to the amount of air entry and air cooling required, the tube box 1 Figure 1 will contain an air cooling tube or an air cooling compartment 4, Figure 1, that will have a required air entry area, such as an area of 20 x 1.3 centimetres, or 26 square centimetres, that will be suitable for a flow rate of fifteen litres per minute, and therefore the air cooling compartment will have a thickness of about two centimetres.

The air expulsion tube 5, Figure 1, or air expulsion compartment, must have an air entry and outlet area that ensures an adequate circulation of fresh clean air, of at least fifteen litres per minute, that is the estimated breathing requirement of an active person, and this implies an air expulsion tube air entry area of at least 20 x 1.3 centimetres, or 26 square centimetres. A suitable air expulsion tube air entry area might therefore be 20 x 4 centimetres,

7.

to provide a clean air circulation of forty five litres per minute, or 20 x 5 centimetres, for a circulation rate of sixty litres per minute. The required rate of air flow may be controlled by a length of metal or plastic material that slides or that is placed over the air entry or air outlet area to suitably reduce the rate of air flow.

The total thickness of the clean air refrigeration unit might therefore be about twelve centimetres. The weight of the clean air unit will be supported by a neck strap 6, figure 1, and Figure 4. A chest strap 2, Figure 4, will maintain the position of the clean air unit. The neck strap support 6 Figure 1 and Figure 4, and the chest positioning strap 2, Figure 4, may for convenience be incorporated into the plastic material of the hood, bib pocket and tunic, as strengthened weight support areas, in the form of a harness, extending over the shoulders and under the arms and round the chest.

Both in the hood presentation of the invention, and in the hood and tunic presentation of this invention, there is a version that does not include a clean air refrigeration unit. In these versions that are without the clean air unit,, the bib pocket filter for the entry of permeated air, drawing indication 22, Figure 2 and figure 3, and the tunic permeated air intake filter 22, Figure 4, may have a suitable air entry area such as 20 x 10 centimetres, or 200 square centimetres or more, being matched by a permeated air outlet filter of similar dimensions, that will permit air to permeate into the protective envelope at an estimated rate of about one hundred and twenty litres per minute or more.

A corresponding air outlet filter 25, Figure 3 and Figure 4, of sides 20 x 10 centimetres or more is suitably placed at the back of the hood, whereby fresh clean air that enters the bib pocket permeated air filter 22, Figures 2 and 3, and the tunic permeated air filter 22, Figure 4, will be warmed by body heat and rise to the air outlet filter 25, Figures 3 and 4, so that an adequate circulation of fresh clean air is induced by an equation tendency of air pressure variations.

8.

The hood and bib pocket version of the invention that is not provided with a clean air unit, and the hood and tunic version that does not have a clean air unit, will be very suitable for regions where it will probably not be possible to rapidly organize a liquid air supply system , such as in the rural areas of China and India, Pakistan and Bangladesh, and in most regions of Africa, and South America. These versions of the invention, operating by air permeation filters, will have the advantage of being as inexpensive as possible, while being safe and comfortable.

The two filters 22 and 25, Figure 3, and the two filters 22 and 25, Figure 4, that by their dimensions are suitable for the passage of permeated air, may form a part of the hood and tunic presentation of the invention that includes a clean air unit, particularly for use when for some reason the clean air refrigeration unit is not functioning. The operation of the clean air unit will produce a circulation of air that is of opposite direction to that produced by the two air permeation filters.

The two filters for permeated air and filters that are for the clean air refrigeration system may each be provided on their outside surface with a cover of plastic sheet for protection from rain. This cover may be positioned on a rim of thickness about one centimetre, that runs along the top side of each air entry or outlet, and down each vertical side. The rim may be two or three centimetres high, so that the cover is positioned at a distance of two or three centimetres from the filter. Air will therefore become available to the filter at its lower horizontal side, or it will leave the filter at this lower side.

The tube box may be mainly made of plastic, with the use of metal for heat conduction. The construction methods by protrusion or moulding will be very rapid, so as to produce many millions of protective clothing units and clean air units very cheaply, in many factories and in many countries, before the H5N1 virus mutates to a form of human influenza virus.

The liquid air flask will be made of metal or another suitable material. The outside surface of the flask will be entirely covered with an insulation material to permit safe handling, or

9.

alternatively, the flasks will have an inner container that is not in contact with an outer surface of the flask. The flask will be provided with a spring held filling stopper, drawing indication 19, Figure 1, and an air pressure valve 20, Figure 1. Many millions of flasks filled with liquid air may be made available by means of liquid air production centres, and by means of high speed flask filling machinery. The liquid air production centres will also fill insulated containers of suitable capacity, having regard for their weight, such as a capacity of ten litres, and road transport wheeled containers having a capacity of several tons, and these containers will be provided with spring held filling stoppers and air pressure valves , and distribution taps, which will operate the spring held filling stoppers on the liquid air flasks, when these are manually refilled from the containers. The containers will be positioned in suitable numbers in public places and in places of work, for convenient flask refilling.

When a tube box 1, Figure 1, is fitted to an attachment plate 35, Figure 1, that is moulded into a bib pocket or a tunic front, a number of heat conducting insertion studs on the attachment plate will become inserted into a number of stud reception wells 9, Figure 1, that are on the tube box and on the liquid air flask, 18, Figure 1. A required amount of heat from the liquid air flask 15, Figure 1, will be conducted through the insertion studs and along the heat conduction channels 3, Figure 1, to the air expulsion tube or compartment 5, Figure 1, and to the air cooling tube or compartment 4, Figure 1.

The liquid air flask 15, Figure 1, is provided with two sets of insertion stud reception wells, one set on each side of the flask. Some of the stud reception wells on one side of the flask contain a heat insulation washer, and these washers will prevent or reduce the amount of heat that can pass through the heat conducting insertion studs that are on the attachment plate 35, Figure 1. The amount of heat that passes from the liquid air flask 15, figure 1, to the tube box 1, Figure 1, is therefore controlled , either by inserting the high energy side of the flask ,16, Figure 1, into the attachment plate 35, Figure 1, or by inserting the low energy side of the flask, 17, Figure 1. The means of fixing the liquid air flask 15, Figure 1, to the attachment plate 35, Figure 1, such as by threaded rods and wing nuts, may be so arranged that there will be two fixation

10.

positions, whereby in one position, the heat conduction studs on the attachment plate 35, Figure 1, are inserted into the flask insertion stud reception wells 18, Figure 1, so that the clean air unit is then in operation, and in a second fixation position, the flask will be positioned and held at a short distance from the attachment plate 35, figure 1, so that in this second position the heat conduction studs will not be inserted into the liquid air flask, and heat will not be conducted through the heat conducting insertion studs on attachment plate 35, figure 1, to the heat conducting channels 3, Figure 1, and therefore, the clean air unit will not then be in operation, and heat will be conserved within the liquid air flask.

The hood , drawing indication 27, Figures 2 and 4, and the bib pocket 33, Figures 2 and 3, and the hood, tunic and trousers combination, Figure 4, may consist of a double sheet of transparent plastic or similar material, sealed at the edges, that may be inflated by exhalation through a small tube supplied with a stopper, or by a small bellows type device, so that the two sheets of plastic are held apart at a distance of about one centimetre, so as to confer rigidity to the walls of the hood and tunic, and so as to provide space and freedom of movement within this clothing, for the wearer, and so as to permit a free circulation of air within this clothing, for the hood, and for the hood and the tunic. The tunic will be provided with an elastic band or belt that will tighten around the waist, to render the tunic airtight, just above the tunic and trousers zip fastener 29, Figure 4. The horizontal zip fastener 29, Figure 1, and the vertical zip fastener 30, Figure 1, if provided, will be covered with a width of attached adhesive cloth to provide a reasonable degree of air tightness. Absolute air tightness is not necessary when virus access is not direct to the eyes, the skin, or the respiratory tract.

In the hood and bib pocket presentation of the invention, the hood 27, Figures 2 and 3, together with the attached bib pocket 33, Figures 2 and 3, may be put on by first inflating the double sheeting, in order to provide a voluminous form to the hood. The hood is then lowered over the head, with the bib pocket over the chest. The weight of the bib pocket and its contents, that may be up to about four kilograms, is supported by the neck and shoulders, by means of

11.

strengthened supporting plastic material forming the bib pocket, or by attached weight supporting and positioning straps, indications 2 and 6, Figure 1.

When the hood has been placed over the head, an air permeation filter 25, Figure 3, will be behind the neck and head. The hood air intake filters 24, Figure 2, for air intake to the hood and to the cooling tubes 7 and 8, Figure 1, will probably not be required, because the air permeation filter 25 Figure 3 will provide a sufficient rate of airflow.

The plastic sheeting of the hood will extend down to the shoulders, and cover a small part of the chest and back, so that a wrapping or scarf 26, Figure 3, that is attached to this shoulder extension, may be lightly wound around the neck, to prevent air from freely entering the hood. There is no need for a high degree of air tightness, as it is mainly only necessary that the eyes and the respiratory tract be protected from direct contact. The plastic extension down to the shoulder may be partly covered with a layer of adhesive cloth, as also the wrapping or scarf 26, Figure 1, so that when the two layers of adhesive cloth are in contact, this wrapping or scarf will suitably remain in its position until it is removed.

One version of the hood and bib pocket presentation of the invention , Figures 2 and 3, and one version of the hood and tunic presentation, Figure 4, will not be provided with a clean air unit, so that the purchase price of these versions may be as low as possible, and in these versions the air circulation system will consist of the two air permeation filters , drawing indications 22 and 25, Figure 4, for the hood and tunic combination, and for the hood and bib pocket version, the two air permeation filters will be drawing indication 22, Figures 2 and 3, with drawing indication 25, Figure 3.

A refreshments pocket 23, Figure 2, is situated within bib pocket 33, Figure 2. This refreshments pocket is not open to ambient air. The refreshments may be manipulated and consumed by means of two sleeves, that form a part of the bib pocket, and that extend from the sides of the pocket to the interior of the pocket, one on each side of the pocket, which sleeves

12.

each terminate in a glove. The hands may be inserted into the sleeves and into the gloves, and the refreshments will thereby be manipulated , and carried into the hood to be consumed, without any exposure to ambient air.

A refreshments pocket 28, Figure 4, is situated within the interior of the tunic, Figure 4.

The clean air refrigeration unit, drawing indication 1, Figures 2, 3, and 4, is carried on the attachment plate 35, Figure 1, that is moulded onto the bib pocket 33, Figures 2 and 3, or on the tunic, indication 1, Figure 4.

The hood and tunic, Figure 4, is expected to be voluminous when the double plastic walls of the clothing are inflated, and the vertical zip fastener 30, Figure 4, that could be provided to open the tunic, will probably not be necessary, when this clothing is donned.

When a clean air refrigeration unit 1 and 15, Figure 3, is to be used within a hood 27 and bib pocket 33, Figure 3, or with a hood and tunic, Figure 4, the liquid air flask will be released from a distant position on the attachment plate 35, Figure 1, and a set of stud insertion wells 18, Figure 1, that are either on the low energy side 17 of the flask, Figure 1, or on the high energy side 16, figure 1, will be inserted over the heat conduction studs that are on the attachment plate 35, Figure 1.

A prearranged suitable degree of heat will be conducted from the liquid air flask along the heat conduction channels 3, Figure 1, to the used air expulsion tube or compartment 5, Figure 1, and to the air cooling tube or compartment 4, Figure 1. Air within the used air expulsion tube will become heavy and sink through the supple or rigid air duct 12, Figures 1 and 4, and through the used air safety filter 13 to an air exit through the protective clothing 14 Figure 1.

13.

As used air sinks from the used air expulsion tube 5, Figure 1, air pressure within the hood will tend to be lowered, and fresh air will therefore enter the hood through filter 25, Figures 3 et 4, filters 24, Figures 2 and 4, probably being superfluous.

A circulation of fresh breathable air is therefore provided within the hood or within the tunic. The air in cooling tube or compartment 4, Figure 1, will also cool and sink from this cooling tube, but this cooled air will remain within the protective envelope. This cooling and sinking will cause air that is within the hood to enter the cooling tube or compartment 4, Figure 1, to become re-cooled, thus providing within the hood, or within the hood and the tunic, a circulation of cooled air.

It is supposed that the trousers protection will only be necessary when extra precautions must be taken, such as for animal handlers and for health workers, and rice workers in paddy fields. The trousers may be attached to the tunic by the horizontal zip fastener 29, Figure 4. The zip fastener will not have to be perfectly air tight, since only direct virus contact is likely to be dangerous. It may be covered by a plastic belt, and held in place by adhesive cloth. The tunic may be lightly confined by a belt at the waist to prevent a direct entry into the tunic of an airborne virus.

Plastic soles or shoes or boots, 31, Figure 4, will be attached to the trousers, and the plastic soles or footwear may be held to walking shoes by straps 32, Figure 4.

Claims

1. Antiviral enclosed clothing that is provided with cleaned air respiration means, including fresh cleaned air provision means in the form of at least two easily replaceable precisely positioned permeated-air chemical filters of a defined adequate air intake and air outlet area, and in the form of a clean air refrigeration unit that is also for the provision of the described respiration means, which means including used air expulsion means, fresh air circulation means, and cooled air circulation means or body cooling means, the antiviral enclosed clothing consisting partly or mainly of transparent plastic sheet or rubberized sheet in two layers for the hood and the tunic, so as to permit the inflation of air between the two sheets to obtain wall rigidity, and space and freedom of movement within the clothing, and air circulation ,the inflation being obtained by means of a provided blowing tube or a small bellows device and an air stopper, the two layers of sheet enclosing the head part of the body with a hood, or enclosing the head and the chest within a hood and a tunic, or enclosing the whole body with the hood and the tunic and attached trousers, whereby the eyes and the respiratory tract and some or all skin area is protected from all direct contamination of a mutated and directly contacted form of the H5N1 influenza virus, so that in the case of an H5N1 pandemic, the herein described antiviral enclosed clothing with cleaned air respiration means may be safely worn in public places throughout the length of a working day for many days, until protection is no longer required, the hood being provided with a neck extension to partly cover the shoulders, and being provided with an attached wrapper or scarf that can be lightly wound around the neck and over the neck extension, being held in position by adhesive clothing, to prevent any direct viral access to the eyes and to the respiratory tract, the hood being provided in one presentation of the invention with a bib pocket that is positioned under the chin and upon the chest, the interior volume of which forming a part of the interior volume within the hood, upon which bib pocket in one version of the invention is placed a large area air permeating air intake chemical filter, that is matched to a large area air permeating air outlet chemical filter that is positioned behind the head at the back of the hood, whereby body heat within the hood warms the enclosed air, that tends to rise to the upper air filter, thereby having the effect of drawing fresh air into the lower position filter and into the bib pocket, and thereby providing an airflow, and a circulation of air, and an intake

15.

of fresh air, and a disposal of respired used air, and a disposal of body heat and moisture, at a rate of flow that is adequate for light or heavy respiration, according to the dimensions of the permeated air filters, the bib pocket in this version of the invention also containing a space for the carrying of refreshments, that can be consumed during the course of a working day without any opening of the antiviral hood clothing, the bib pocket being provided with sleeves terminating in gloves, one on each side of the pocket, that extend from the sides of the pocket to the interior of the pocket, into which the hands may be placed to permit a manipulation of the refreshments within the pocket, and their carrying into the hood , to be consumed, while in another version of the invention, the bib pocket also contains an attachment plate that is moulded into the plastic clothing material, on the front side of the pocket, the attachment plate thereby presenting one of its faces on the interior of the bib pocket, and the other face of the plate being on the exterior side of the bib pocket, onto which attachment plate are attached by clips or by screws the two parts of the clean air refrigeration unit, one part, being the tube box, being positioned within the bib pocket, and being attached to the interior side of the attachment plate , and the other part, being a liquid air flask, being attached to the exterior side of the attachment plate, whereby, when the flask is suitably connected to the attachment plate for operation, suitable amounts of heat from the liquid air that is within the flask, are conducted through attachment plate connection insertion studs, that become inserted within insertion stud reception wells that are on the tube box and on the liquid air flask, so that required amounts of heat are conducted from the liquid air flask to the tube box, through heat conduction channels, to a used air expulsion tube or compartment, and to an air cooling tube or compartment, whereby air that is cooled within the used air expulsion tube or compartment increases in density as its temperature decreases, and this cooled air therefore sinks from the expulsion tube and from the enclosed volume, under the effect of gravity, while fresh ambient air is induced to enter the air intake to the enclosed volume of antiviral clothing, and to pass through the air cleaning chemical filters, the air pressure within the enclosed volume thereby being maintained, and thereby, an intake and circulation of fresh air is provided, and a means of expulsing used moist air, the circulation of fresh breathable air being set in motion without the application of a mechanical or electrical pumping device, the air within the air cooling tube or compartment also

16.

increasing in density as its temperature decreases, and thereby sinking from the cooling tube under the effect of gravity, but remaining within the hood volume and the bib pocket volume, thereby cooling the air that is within the enclosed antiviral clothing, and thereby engendering a circulation of air within the enclosed volume, as air within the enclosed volume re-enters the cooling tube to replace cooling air within the cooling tube that is sinking from the tube, the used air from the expulsion tube sinking through a safety filter at an air outlet on the front of the bib pocket, which safety filter, preventing unfiltered exterior ambient air from entering the enclosed volume, one other presentation of the invention being a hood combined with a tunic, wherewith one version of this hood and tunic presentation is provided with two permeated air filters for clean air respiration, and wherewith one version of the hood and tunic presentation is provided both with the two air permeation filters and the clean air refrigeration unit, the attachment plate being moulded into the plastic material on the front of the tunic, the tunic being provided with sleeves and gloves for external manipulations, and an interior refreshments pocket, and the tunic also being provided with a zip fastener around the waist for the fastening of trousers, next to a strip of adhesive cloth, and with a band of plastic material with a strip of adhesive cloth, to cover the fastener and to render the zip fastener air tight, the trousers being provided with attached plastic soles or types of footwear that have interior elastic ankle straps and toe straps, or exterior elastic straps or leather straps, to fasten the plastic soles or footwear to walking shoes.

2. Antiviral enclosed clothing with respiration means, as claimed in claim 1, for wear for protection when there is a possibility of infection by a mutation of the H5N1 virus, whereby plastic sheet or similar material is used to form an enclosed envelope, the plastic sheet being doubled so as to be inflatable by means of a blowing tube and an air stopper, or by means of small bellows, whereby an enclosed hood is formed, with a neck extension to the shoulders, and whereby a wrapper or scarf is provided , with adhesive cloth material, for lightly winding around the neck , to prevent air from freely entering the hood, and whereby in one version, an

17.

enclosed bib pocket is formed, the interior volume of which being a part of the interior volume of the hood, the bib pocket being provided with a large area air intake air permeating chemical filter, and the back of the hood being provided with a similar large area air outlet air permeating chemical filter, whereby a fresh cleaned air circulation breathing system is created, due to the convection effects of body heat, that cause warmed air to rise and to leave the enclosed volume of the envelope through the upper permeated air filter, as fresh replacement air enters the lower permeated air filter, thus resulting in the disposal of used moist air, and the provision of fresh cleaned breathable air, and the disposal of body heat, and whereby the bib pocket is also provided with a refreshments pocket that forms a part of the interior enclosed volume of the envelope, for the safe taking of refreshments within the enclosed volume, the weight of the bib pocket being supported by a neck strap or a harness or by strengthened plastic clothing material, the bib pocket being provided on each of two sides with a sleeve opening, that leads to a glove that is within the pocket, so that the refreshments can be manipulated and carried to the hood, to be consumed, without any opening of the enclosed antiviral clothing.

3. Antiviral enclosed clothing with respiration means, as claimed in claims 1 and 2, whereby a hood and a bib pocket are provided, with air permeation filters as respiration means, and also a clean air unit as respiration means, for the provision of a circulation of fresh air and for the disposal of used moist air, and for the provision of a circulation of cooled air, the clean air unit consisting of two main parts, a tube box and a liquid air flask, these parts being attached to the bib pocket by being screwed or clipped to an attachment plate, that is moulded within the plastic material on the front of the bib pocket, the tube box being attached to the side of the plate that is inside the bib pocket, and the liquid air flask being attached to the side of the plate that is on the outside of the bib pocket, the liquid air flask being attached to the attachment plate in one of two positions, one position being at a short distance from the plate , this being a non-operational position, and the other attachment position being in contact with the plate, whereby the two ends of a number of heat conduction insertion studs that are situated on each side of the attachment plate are each in an inserted position within a number of stud insertion wells, that are situated on the tube box, and that are situated on the liquid air flask, there being stud

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insertion wells on two sides of the liquid air flask, being one set of stud insertion wells on each side, whereby a number of the set of insertion wells on one side of the flask are provided with heat insulation washers, that reduce or prevent heat from passing from the liquid air in the flask to the heat conduction insertion studs, when they are inserted into these wells, there therefore being provided two levels of heat conduction from the liquid air flask, according to the side of the flask that has been attached to the attachment plate, whereby a high or a low level of heat energy is conducted from the liquid air flask through the insertion studs to the tube box, and thence through heat conducting channels to a used air expulsion tube or compartment, and to an air cooling tube or compartment, into which tubes or compartments are positioned vertical metal tubes or fins to impart heat to the air that is within the tubes, thus causing the density of the air in these cooling tubes to increase, and thereby its relative weight, whereby the air that is in these cooling tubes or compartments sinks from these tubes under the action of gravity, the air in the used air expulsion tube sinking to and through an air outlet, from the protective envelope, thus tending to decrease air pressure within the enclosed volume of the antiviral envelope, and thereby provoking an entry of fresh replacement air through the air inlet filter or filters , and thereby engendering a circulation of fresh air, and providing a means of expulsing used moist air, the circulation of fresh filtered breathable air being set in motion without the application of an electrical or mechanical pumping device, and whereby air that is in the air cooling tube or compartment cools and sinks from the cooling tube or compartment but remains within the enclosed envelope, thus lowering the temperature of the air within the enclosed protective envelope, this air that sinks from the cooling tube being replaced by air that is within the envelope, that is thereby to some extent re-cooled, comfortable respiration means thereby being provided within the enclosed antiviral clothing envelope.

4. Antiviral enclosed clothing with respiration means, as in claims 1, 2, and 3, that include a hood that is attached to a tunic, that is provided with sleeves terminating in gloves that are sealed to the sleeves, to permit exterior manipulations without the entry of air to the sleeves, the tunic being rendered comparatively airtight at waist level by a belt or an elastic band , to prevent the entry of a virus into the tunic at waist level, the hood and the tunic being formed by

two layers of transparent or mainly or partly transparent plastic sheet or similar material to permit inflation, for wall rigidity and for the provision of internal space and comfort, the tunic being provided with an internal refreshments pocket for the consumption of foods and liquids, within the enclosed hood, and the tunic being provided with a horizontal zip fastener extending around the tunic at waist level to permit the fastening of trousers, the zip fastener being covered with a strip of plastic that is held in place with adhesive cloth, to prevent air penetration, whereby the respiration means consist of the two permeated air filters as described in claims 1 and 2, one of the two permeated air filters being positioned on the front of the tunic.

5. Antiviral enclosed clothing with respiration means, as in claims 1, 2, and 3, that include a hood that is attached to a tunic, that is provided with sleeves terminating in gloves that are sealed to the sleeves, to permit exterior manipulations without the entry of air to the sleeves, the tunic being rendered comparatively airtight at waist level by a belt or an elastic band , to prevent the direct entry of a virus into the tunic at waist level, the hood and the tunic being formed by two layers of transparent or mainly or partly transparent plastic sheet or similar material to permit inflation, for wall rigidity and for the provision of internal space and comfort, the tunic being provided with an internal refreshments pocket for the consumption of foods and liquids, within the enclosed hood, and the tunic being provided with a horizontal zip fastener extending around the tunic at waist level to permit the fastening of trousers, the zip fastener being covered with a strip of plastic that is held in place with adhesive cloth, to prevent air penetration, whereby the respiration means include the two permeated air filters as described in claims 1 and 2, and whereby the respiration means include the clean air refrigeration unit described in claims 1 and 3, the attachment plate being moulded into the plastic material of the front of the tunic , and the used air sinking from the expulsion tube or compartment, having a safety filter and an air outlet at the front of the tunic.

6. Antiviral enclosed clothing with improved respiration means, for a limited specific function, the improved respiration means including a clean air refrigeration unit, as in claims 1 and 3, the present improved application being without a means of virus elimination by

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temperature variation, thus achieving an aim of simplicity, as respiration means, the limited specific simplified function being a protection from the H5N1 virus only, by filter elimination only, during daily outdoor periods of use within working, travelling and shopping hours, the improved respiration means being simplicity of construction and economy of construction and simplicity of function and economy of energy, and simplicity of energy control, the improved clean air refrigeration unit being specifically for protection from the H5N1 avian flu virus by the provision of a circulation of fresh air and by the disposal of used moist air, and by the provision of a circulation of cooled air, and by the use of permeated air filters, to the exclusion of any more sophisticated and complicated performance, such as body refrigeration in high ambient temperatures, previously described in the similar invention, the improved clean air refrigeration unit consisting of two main parts, an improved tube box, being improved by simplicity, that specifically provides protection from the H5N1 virus only, and an improved liquid air flask, being improved by simplicity of function, that specifically provides protection from the H5N1 virus only, these parts being attached to the bib pocket or to the tunic of the enclosed antiviral clothing by being screwed or clipped to an attachment plate, that is moulded within the plastic material on the front of the bib pocket or the tunic, the tube box being attached to the side of the plate that is inside the bib pocket, and the liquid air flask being attached to the side of the plate that is on the outside of the bib pocket, the liquid air flask being attached to the attachment plate in one of two positions, one position being at a short distance from the plate , this being a non-operational position to conserve liquid air energy, and the other attachment position being in contact with the plate, whereby the two ends of a number of heat conduction insertion studs that are situated on each side of the attachment plate are each in an inserted position within a number of stud insertion wells, that are situated on the tube box, and that are situated on the liquid air flask, there being stud insertion wells on two sides of the liquid air flask, being one set of stud insertion wells on each side, whereby a number of the set of insertion wells on one side of the flask are provided with heat insulation washers, that reduce or prevent heat from passing from the liquid air in the flask to the heat conduction insertion studs, when they are inserted into these wells, there therefore being provided two levels of heat conduction from the liquid air flask, according to the side of the flask that has been attached to the attachment plate, whereby there

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is the improvement of a high or a low level of heat energy being conducted from the liquid air flask through the insertion studs to the tube box, and thence through heat conducting channels to a used air expulsion tube or compartment, and to an air cooling tube or compartment, into which tubes or compartments are positioned any required number of vertical metal fins to impart heat to the air that is within the tubes or compartments, thus causing the density of the air in these cooling tubes to increase, and thereby its relative weight, whereby the air that is in these cooling tubes or compartments sinks from these tubes under the action of gravity, the air in the used air expulsion tube sinking to and through an air outlet, from the protective envelope, thus tending to decrease air pressure within the enclosed volume of the antiviral envelope, and thereby provoking an entry of fresh replacement air through the air inlet filter or filters , and thereby engendering a circulation of fresh air, and providing a means of expulsing used moist air, the circulation of fresh filtered breathable air being set in motion without the application of an electrical or mechanical pumping device, and whereby air that is in the air cooling tube or compartment cools and sinks from the cooling tube or compartment but remains within the enclosed envelope, thus lowering the temperature of the air within the enclosed protective envelope, this air that sinks from the cooling tube being replaced by air that is within the envelope, that is thereby to some extent re-cooled, comfortable respiration means thereby being provided within the enclosed antiviral clothing envelope for a minimum of expenditure of liquid air energy.

7. Antiviral enclosed clothing with respiration means, as in claims 1 and 2, including an application of plastic sheet or similar material in two close layers that envelope a part of the body, particularly in the form of a hood, and a hood and bib pocket, and a hood together with a tunic, or the whole body with the inclusion of trousers, the two layers of plastic clothing being inflated with provided inflation means, including an inflation tube and air stopper, or a small bellows device, so that adequate moving room is provided within the enclosed antiviral clothing, and so that air flow may freely circulate within the enclosed envelope, particularly within the hood and tunic.

8. Antiviral enclosed clothing with respiration means, as in claims 1,2 and 3, including a frame of required dimensions, moulded into the plastic of the antiviral clothing , for the support and the fixing of a frame holding a permeated air filter, permitting the filter frame and filter to be easily and rapidly exchanged for a new filter when this is necessary.

9. Antiviral enclosed clothing with respiration means, as in claims 1, 2, 3 and 6, including an attachment plate that is moulded into the plastic of the bib filter, or that is moulded into the plastic of the tunic, for the support and the fixing into position of parts of the clean air refrigeration unit, these parts being the tube box and the liquid air flask.

10. Antiviral enclosed clothing with respiration means, as in claim 1, including a rim of about one centimetre in width and one centimetre in height, that is suitably positioned upon the surface of the plastic clothing, around the permeated air filter inlets and outlets, that runs along the top horizontal side of the filter, and down the two vertical sides, to support a cover of plastic sheet that prevents rain from entering into the filters.

11. Antiviral enclosed clothing with respiration means, as in claims 1, 3, and 6, including a rate of airflow control plate that can slide over the air inlet of the air expulsion tube of the tube box, so that a controlled amount of air flow can be obtained.

12. Antiviral enclosed clothing with respiration means substantially as described in claims 1 to 11.